XantiaExclusive:
What size tyres do you have on your Xantia. Im asuming 195/65/15? Or do you have 205/65/15? I cant remember what they use now.
If 195/65/15 you will be able to get energy tyres for under £70. Without asking for any discount. The next size up are more expensive, but £80 a tyres does sound a little high. If yours is a bigger size you probably have a good deal.
Have you looked on any of the online tyre dealers. This one i have heard to be good:
www.blackcircles.com. You can choose a fitted price, then when buying online you select where you want them to be fitted (its a local Vauxhall dealer for me) and pick a day for them to be fitted. Nothing should be more simple and they are at a good price, so it would seem, although it would be worth ringing your selected tyre fitter before booking, to ensure they can balance your wheels. Although a lot of places can as a lot of cars have that problem.
Also since your getting 4 new tyres, how about trying the newer Michelin tyre? the E3A is getting on a bit now and is soon to be discontinued. Michelins newer energy tyre is the EnergySaver, i have these on the front of my C5, and i have got to say they do grip! I have no complaints about them, other than the sidewalls are a little too soft for my liking, (that compliments the ride i suppose) but the grip is very good, they are great in the wet and seem to wear quite well. I have the E3A energys on the rear, they are fine but i have had these on another car (on the front) and was slightly less impressed.
If yours is the 195/65/15 size (which most Xantias and Xms are, and my C5 hatch is too), blackcircles are listing the Michelin EnergySaver for £67.78 each - Fitted! Though if you shop around, some tyre places will beat the online price.
Its always nice to stay with michelins with a Citroen, though we rarely do actually. However if you want to try something else, i really recommend Vredestein Sportrac3s. Now you might not have heard of these, but trust me, they are a very good make indeed. The sportrac3s have a V pattern tread, which is very quiet and fantastic in lots of standing water. I had a pair of these fitted to the xm and it improved its drive greatly. Also, Uniroyal tyres seem a popular choice on here. Though i am yet to try those for myself.
Hope that helps.
Chris